Jerry: I don't understand. Do you have my reservation?
Car Rental Assistant: We have your reservation, we just ran out of cars.
Jerry: But the reservation keeps the car here, that's why you have the reservation.
Car Rental Assistant: I think I know why we have reservations.
Jerry: I don't think you do. You see, you know how to TAKE the reservation, you just don't know how to HOLD the reservation. And that's really the most important part of the reservation: the holding. Anybody can just take them.
Quote from S03E11 - The Alternate Side